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can_putd() problem

 
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menthongps



Joined: 08 Nov 2018
Posts: 6

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PostPosted: Thu Nov 08, 2018 10:23 am     Reply with quote
hi all,
Can help me i have 2 problem with this code?
1: can_putd() always loop at 0x111 and can't call 0x222.
2: delay between two messages i monitor only 0.2ms not is 10ms at my code.

I tried a lot of change but can_putd() alway loop and can't exit to call other function.

Thanks very much for help!
my code:
Code:

#include <18F4680.h>
#use delay(crystal=20MHz)
#include <can-18F4580.c>
#define can_tbe_0() (!TXB0CON.txreq)

void main()
{
int data[8]={7,6,5,4,3,2,1,0};
can_init();
while(TRUE)
  {
   if (can_tbe()) can_putd(0x111, data, 8, 3, 0, 0);
      delay_ms(10);
   if (can_tbe()) can_putd(0x222, data, 8, 3, 0, 0);
  }
}
menthongps



Joined: 08 Nov 2018
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PostPosted: Thu Nov 08, 2018 10:31 am     Reply with quote
I think may be have problem with this
but i not understand why this always loop!

Code:

int1 can_putd(unsigned int32 id, unsigned int *data, unsigned int len, unsigned int priority, int1 ext, int1 rtr) {
   unsigned int i;
   unsigned int *txd0;
   unsigned int port;

   txd0=&TXRXBaD0;

    // find empty transmitter
    // map access bank addresses to empty transmitter
   if (!TXB0CON.txreq)
   {
      if(curfunmode==CAN_FUN_OP_LEGACY)
         CANCON.win=CAN_WIN_TX0;
      else
         ECANCON.ewin=TX0;
      port=0;
   }
   else if (!TXB1CON.txreq)
   {
      if(curfunmode==CAN_FUN_OP_LEGACY)
         CANCON.win=CAN_WIN_TX1;
      else
         ECANCON.ewin=TX1;
      port=1;
   }
   else if (!TXB2CON.txreq)
   {
      if(curfunmode==CAN_FUN_OP_LEGACY)
         CANCON.win=CAN_WIN_TX2;
      else
         ECANCON.ewin=TX2;
      port=2;
   }
   else if (!B0CONT.txreq && BSEL0.b0txen)
   {
      ECANCON.ewin=TXRX0;
      port=3;
   }
   else if (!B1CONT.txreq && BSEL0.b1txen)
   {
      ECANCON.ewin=TXRX1;
      port=4;
   }
   else if (!B2CONT.txreq && BSEL0.b2txen)
   {
      ECANCON.ewin=TXRX2;
      port=5;
   }
   else if (!B3CONT.txreq && BSEL0.b3txen)
   {
      ECANCON.ewin=TXRX3;
      port=6;
   }
   else if (!B4CONT.txreq && BSEL0.b4txen)
   {
      ECANCON.ewin=TXRX4;
      port=7;
   }
   else if (!B5CONT.txreq && BSEL0.b5txen)
   {
      ECANCON.ewin=TXRX5;
      port=8;
   }
   else
   {
      #if CAN_DO_DEBUG
         can_debug("\r\nCAN_PUTD() FAIL: NO OPEN TX BUFFERS\r\n");
      #endif
      return(0);
   }

   //set priority.
   TXBaCON.txpri=priority;

   //set tx mask
   can_set_id(TXRXBaID, id, ext);

   //set tx data count
   TXBaDLC=len;
   TXBaDLC.rtr=rtr;

    for (i=0; i<len; i++) {
      *txd0=*data;
      txd0++;
      data++;
    }

   //enable transmission
   TXBaCON.txreq=1;

   if(curfunmode==CAN_FUN_OP_LEGACY)
      CANCON.win=CAN_WIN_RX0;
   else
      ECANCON.ewin=RX0;

   #if CAN_DO_DEBUG
            can_debug("\r\nCAN_PUTD(): BUFF=%U ID=%LX LEN=%U PRI=%U EXT=%U RTR=%U\r\n", port, id, len, priority, ext, rtr);
            if ((len)&&(!rtr)) {
               data-=len;
               can_debug("  DATA = ");
               for (i=0;i<len;i++) {
                  can_debug("%X ",*data);
                  data++;
               }
               can_debug("\r\n");
            }
   #endif

   return(1);
menthongps



Joined: 08 Nov 2018
Posts: 6

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PostPosted: Fri Nov 09, 2018 6:19 am     Reply with quote
nobody can help!!!! Crying or Very sad Crying or Very sad Crying or Very sad
temtronic



Joined: 01 Jul 2010
Posts: 9243
Location: Greensville,Ontario

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PostPosted: Fri Nov 09, 2018 9:09 am     Reply with quote
OK, cut a New program to flash an LED at 1Hz. Get it to work.
I suspect your 'clock' is not running at the proper speed as the delay_ms() is'nt working ?

Jay
Ttelmah



Joined: 11 Mar 2010
Posts: 19539

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PostPosted: Fri Nov 09, 2018 9:16 am     Reply with quote
txrtr needs to be 1.

You are not issuing a request for transmission.
menthongps



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Posts: 6

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PostPosted: Fri Nov 09, 2018 9:48 am     Reply with quote
thank, i make toggle led it is ok.

the problem i think on transmit buffer, it fill in full with A message, always call A and never call B message.

this is capture CAN logic.
i can't sent data 0x222 it alway loop in 0x111.

0.000677500000000,0,DATA,0x111,0x8,0x07 0x06 0x05 0x04 0x03 0x02 0x01 0x00,0x2E24,NAK
0.001741062500000,1,DATA,0x111,0x8,0x07 0x06 0x05 0x04 0x03 0x02 0x01 0x00,0x2E24,NAK
0.002804625000000,2,DATA,0x111,0x8,0x07 0x06 0x05 0x04 0x03 0x02 0x01 0x00,0x2E24,NAK
0.003868187500000,3,DATA,0x111,0x8,0x07 0x06 0x05 0x04 0x03 0x02 0x01 0x00,0x2E24,NAK
0.004931750000000,4,DATA,0x111,0x8,0x07 0x06 0x05 0x04 0x03 0x02 0x01 0x00,0x2E24,NAK
0.005995312500000,5,DATA,0x111,0x8,0x07 0x06 0x05 0x04 0x03 0x02 0x01 0x00,0x2E24,NAK
0.007058875000000,6,DATA,0x111,0x8,0x07 0x06 0x05 0x04 0x03 0x02 0x01 0x00,0x2E24,NAK
0.008122437500000,7,DATA,0x111,0x8,0x07 0x06 0x05 0x04 0x03 0x02 0x01 0x00,0x2E24,NAK
0.009186000000000,8,DATA,0x111,0x8,0x07 0x06 0x05 0x04 0x03 0x02 0x01 0x00,0x2E24,NAK
0.010249562500000,9,DATA,0x111,0x8,0x07 0x06 0x05 0x04 0x03 0x02 0x01 0x00,0x2E24,NAK
0.011313125000000,10,DATA,0x111,0x8,0x07 0x06 0x05 0x04 0x03 0x02 0x01 0x00,0x2E24,NAK
0.012376687500000,11,DATA,0x111,0x8,0x07 0x06 0x05 0x04 0x03 0x02 0x01 0x00,0x2E24,NAK
0.013440250000000,12,DATA,0x111,0x8,0x07 0x06 0x05 0x04 0x03 0x02 0x01 0x00,0x2E24,NAK
0.014503812500000,13,DATA,0x111,0x8,0x07 0x06 0x05 0x04 0x03 0x02 0x01 0x00,0x2E24,NAK
0.015567375000000,14,DATA,0x111,0x8,0x07 0x06 0x05 0x04 0x03 0x02 0x01 0x00,0x2E24,NAK
0.016630937500000,15,DATA,0x111,0x8,0x07 0x06 0x05 0x04 0x03 0x02 0x01 0x00,0x2E24,NAK
0.017694500000000,16,DATA,0x111,0x8,0x07 0x06 0x05 0x04 0x03 0x02 0x01 0x00,0x2E24,NAK
0.018758062500000,17,DATA,0x111,0x8,0x07 0x06 0x05 0x04 0x03 0x02 0x01 0x00,0x2E24,NAK
0.019821625000000,18,DATA,0x111,0x8,0x07 0x06 0x05 0x04 0x03 0x02 0x01 0x00,0x2E24,NAK
0.020885187500000,19,DATA,0x111,0x8,0x07 0x06 0x05 0x04 0x03 0x02 0x01 0x00,0x2E24,NAK
0.021948750000000,20,DATA,0x111,0x8,0x07 0x06 0x05 0x04 0x03 0x02 0x01 0x00,0x2E24,NAK
0.023012312500000,21,DATA,0x111,0x8,0x07 0x06 0x05 0x04 0x03 0x02 0x01 0x00,0x2E24,NAK
0.024075875000000,22,DATA,0x111,0x8,0x07 0x06 0x05 0x04 0x03 0x02 0x01 0x00,0x2E24,NAK
0.025139437500000,23,DATA,0x111,0x8,0x07 0x06 0x05 0x04 0x03 0x02 0x01 0x00,0x2E24,NAK
0.026203000000000,24,DATA,0x111,0x8,0x07 0x06 0x05 0x04 0x03 0x02 0x01 0x00,0x2E24,NAK
0.027266562500000,25,DATA,0x111,0x8,0x07 0x06 0x05 0x04 0x03 0x02 0x01 0x00,0x2E24,NAK
0.028330125000000,26,DATA,0x111,0x8,0x07 0x06 0x05 0x04 0x03 0x02 0x01 0x00,0x2E24,NAK
0.029393687500000,27,DATA,0x111,0x8,0x07 0x06 0x05 0x04 0x03 0x02 0x01 0x00,0x2E24,NAK
0.030457312500000,28,DATA,0x111,0x8,0x07 0x06 0x05 0x04 0x03 0x02 0x01 0x00,0x2E24,NAK
0.031520875000000,29,DATA,0x111,0x8,0x07 0x06 0x05 0x04 0x03 0x02 0x01 0x00,0x2E24,NAK
0.032584437500000,30,DATA,0x111,0x8,0x07 0x06 0x05 0x04 0x03 0x02 0x01 0x00,0x2E24,NAK
Ttelmah



Joined: 11 Mar 2010
Posts: 19539

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PostPosted: Fri Nov 09, 2018 11:36 am     Reply with quote
Yes. As I have already pointed out, you are not telling it to start a transmission, so it transmits when the buffer gets full only.

You need to set txrtr, in your can_putd commands.
menthongps



Joined: 08 Nov 2018
Posts: 6

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PostPosted: Sat Nov 10, 2018 6:25 pm     Reply with quote
Anyone know please help me!

How to put messenger to buffer and how to send it out TXT.

Like i want send the message A, B, C at one time, how to do?
I see time between A and B is about 70us, B and C also.
So i know message have priority, but important i don't know is command to put message to buffer and send it.
How to know message has sent and call next message ?
I see my code buffer is over fill by only one 111 message so how to put both A,B,C to one buffer or put A to Buffer B0, B to buffer B1, C to buffer B2 and call them with correct sequence ?
Big Thank!!!!

Example:
0.011816437500000,5,DATA,0x12F,0x8,0xFA 0x05 0xE0 0x03 0x00 0x78 0x00 0x00,0x4346,ACK
0.012312812500000,6,DATA,0x22F,0x8,0x02 0x07 0x00 0x00 0x00 0x00 0x05 0xE0,0x6707,ACK
0.012801125000000,7,DATA,0x121,0x8,0x00 0xFA 0x00 0x00 0x05 0xE0 0x31 0x00,0x1A3D,ACK
0.013285625000000,8,DATA,0x221,0x8,0x65 0x01 0x00 0x00 0x00 0x00 0x00 0x00,0x7E9D,ACK

Very Happy Very Happy Very Happy Very Happy Very Happy
PCM programmer



Joined: 06 Sep 2003
Posts: 21708

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PostPosted: Sat Nov 10, 2018 9:11 pm     Reply with quote
This thread is about sending text messages with the CAN bus:
http://www.ccsinfo.com/forum/viewtopic.php?t=17941
menthongps



Joined: 08 Nov 2018
Posts: 6

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PostPosted: Wed Jan 16, 2019 7:15 am     Reply with quote
hello all!
I'm not programer so verry difficult to write code.
if have any solution please tell me.
I can pay for code.
my problem is how to sent messenge like:
1,2,3,4 delay_ms(100) 1,2,3,4 delay_ms(100).......
thanks all!
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